Tractor



Api, 24, 1923. 1,452,557

. R. HARROUN TRACTOR Filed May 2l, 1920 2 Sheets-Sheet l nvanboz a] Har/ow? anims/ruso Apr. 24, 1923. 1,452,557

R. HARROUN TRACTOR Filed May 21', 1920 2 sheets-sheet 2 i??? Har/'0am M W Mk1/mm Patented Apr. 24, 1923.

uNiraEn STATES RAY EARROUN, F DETROIT; MICHIGAN.

TRACTOR.

` .Application mi nay 21.

To all whom` it Drayton/cern Be it known that I, RAY HARROUN, a

citizen of theUnited States o f America, r e.

sidingv at Detroit, in the county of Wayne and State ot Michigan, haveinvented certain; new andl useful Improvements.. in Tractors, ofr which the following. isa speciication, reference being had therein to the accompanying drawings.

rlieA invention relates to tractors `and has for its. main object the provision of; means for varying the road clearance or height off the tractor frame above the ground.y @ther objects of the invention reside in the novel arrangements and combination of parts as more fully hereinafter set forth.

In the drawings.: v v

Figure 1 is a top planview ofL a tractor, embodying my invention;

Figures 2 and?) are respectively front and, rear elevations thereof; o

Figure 4 is a top plan view of the front axle;

FigureY 5 is a cross; `section on the line 5-5 of Figure 2;

Figure 6y is a cross section on` the line 6-6 of Figure 1;

' The tractor has the frame 1 formed ofthe.. engine 2 and transmission housing 3- secured` to each other, this framel extending between and mounted. on the front and rear axles 4 and 5, respectively., ljarey the ground steering whee-ls pivotally mounted uponV ther front axle 4, and 7 are suitable, brace rods connected to thek front axle and to the frame 1.4 8 are drive wheels mounted upon the rear axle and suitably driven, as by means of the pinions 9 upon the outer ends of the drive shafts engaging the internal gears 10 secured to the drive wheels.

For the purpose of varying the height of the front end of the tractor frame l above the ground, the following construction is provided; the front axle 4 comprises the complementary beams 11 which are pivotally secured to the forks 12 at their outer ends and rotatably engage the pivots 13 at their inner ends. 14 are complementary rods extending parallel to the axes of the beams 11 and pivotally secured to the forks 12 at their outer ends and rotatably engag-. ing the pivot 15 at their inner ends. The pivots 13 and 15 are in vertical alignment and are connected to each other by the links 16. The pivots connected .to the outer Figure 7 is a modification.

1920. `serial No. 383,054.

endsof the` correspondingl rods and beams are also. in vertical alignment, the arrangement being. such that a parallelogram construction is secured for each longitudinal half of the axle, so that the pivots 17 for the ground steering wheels 6 are at all times vertically mounted inI the forks 12. 18 are depending lugs upon each of the beams 11 and- 19 isa rod extending between these lugs and parallel to the axis` of the beam. 2O are lugs upon the rods 14, each lug being apertured for the passage of therod 19, and 21; and 22 are coil springs surrounding each rod 19 on opposite sides of the lug 2()y and abutting the same and the. lugs 13 upon the beam 11, whereby the parts are yieldably;

maintained in position.

order to vary the angularityof the beams and rods relative to the ground, each rod 14 is formed with a threaded portion 23 which is engagealble by the nuts 25 and;

26respectively. The lug20 is formed upon` the sleeve 27 which slidably engages the threaded portion 23. In operation, by screwing the nuts- 25 and 26 to move the same towards the pivot 15, the sleeve 27` with its lug;y 20 may be correspondingly moved thereby tending'to increase the compression of the spring 21, so' that the angularity ofl the beam and rod relative to z the ground; increases and the height of their inner; ends above, the,l ground increases. By screwing the nuts 1n the opposite direction, the inner ends of the beam andL rod` can be tractor frame above the ground.

The lengths of the brace rods 7 are adj ustable to permit of the relative movement of the tractor frame and outer ends of the front ax e.

The front end of the tractor frame 1 is mounted upon the bracket 28, which'has the dependinglugs 29 rotatably engaging the pivot 13, whereby the tractor frame has a 3 point suspensiomthe vrear end of the frame` being rigidly secured to the rear axle 5 through the differential housing 30.

To raise the rear end of the tractor frame 1 relative to the ground, the spindles 31 of the drive wheels 8 are mounted upon the arms 32 which are rotatably adjustably mounted upon kthe rear axle housing. 33 are rods secured to the outer ends of the arms 32 and to the transmission housing 3 near its bottom. 34 are other rods secured to the arms 32 near their outer ends and to the rlowered therebydecreasingthe height of the transmission housing 3 near its top. The lengths of these rods are adjustable, so that with the parts in the positions shown in Figure 3 by increasing the lengths of the rods 34 and decreasing the lengths of the rods 33 after releasing the clamping pressure of the arms upon the rear axle housing, the arms are swung downwardly, thereby raising the rear axle and the rear of the tractor frame l relative to the ground. By increasing the lengths of the rods 33 and 34 the rear ofthe tractor frame is lowered.

35 are bolts for clamping the arms 32 upon the rear axle housing.

As shown in the modification in Figure 6, the rods 33 and 34 are yieldably connected to the arms 32. The rods pass through brackets 36 secured to the arms and coil springs 37 and 38 surround the rods. The springs 37 abut the collars 39 upon the rods and the outer faces of the brackets while the springs 38 abut the nuts 40 and the inner faces of the brackets.

Although I have described this construction in connection with a tractor, it is to be understood that the same is applicable to other types of motor vehicles, such as trucks.

What I claim as my invention is:

l. The combination with a vehicle frame, of front and rear axles upon which said trame is mounted, ground engaging wheels upon said axles, and means for varying the height of said frame relative to said wheels, including means for adjusting said front axle.

2. The combination with a vehicle frame, of front and rear axles upon which said frame is mounted, wheels at the opposite ends of said axles and rotatably mounted thereon, and means for varying the height of said frame relative to the axes of rotation of said wheels, including means for adjusting said front axle.

3. The combination with a rear axle, of a vehicle frame mounted thereon, ground engaging wheels at opposite ends of said axle,

spindles for said wheels, arms carrying said spindles and rotatably adjustably mounted upon said axle and adjustable tension connections between said arms and frame for rotating said arms about said axle.

4. The combination with a rear axle, of a vehicle frame mounted on said axle, ground engaging wheels at opposite ends of said axle, spindles for said wheels, arms carrying said spindles and rotatably adjustably mounted upon said axle, rods connected to said frame and yieldably connected to said arms and means for varying the lengths of said rods to rotate said arms about said axle.

5. 'Ihe combination with an axle, of a vehicle frame mounted on said axle, arms rotatably adjustably mounted upon said axle, ground engaging wheels journalled upon said arms, and a pair of adjustable rods connect?- ed to said frame and to said arms for varying the rotative positions of said arms about said axle.

6. The combination of a vehicle frame,

rarms rotatably adjustably connected to said frame, ground engaging wheels journalled upon said arms, and a pair of adjustable rods connected to each of said arms and to said vehicle frame to 'vary the rotative positions of said arms relative to said frame.

7. The combination with a vehicle frame, of front and rear axles upon which said frame is mounted, ground engaging wheels at opposite ends of said axles, spindles for said wheels, supports for saidspindles rotatably'inounted upon said axles, and means extending between said supports and said frame vfor adjusting the height of said rame relative to all of said wheels.

In testimony whereof I allix my signature.

RAY IIARROUN. 

